Volume and size effects of intermetallic compounds on the high-temperature oxidation behavior of Mo-Si-B alloys

Won June Choi; Chun Woong Park; Jung Hyo Park; Young Do Kim; Jong Min Byun

doi:10.1016/j.ijrmhm.2019.02.008

Volume and size effects of intermetallic compounds on the high-temperature oxidation behavior of Mo-Si-B alloys

Won June Choi, Chun Woong Park, Jung Hyo Park, Young Do Kim, Jong Min Byun

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

In this study, we investigated the high-temperature oxidation behavior of Mo-Si-B alloys with different volume fractions or sizes of intermetallic compound phases. Mo-Si-B alloys with uniformly dispersed intermetallic compound phases (Mo ₅ SIB ₂ and Mo ₃ Si) in Mo solid solution matrix phase were fabricated using a novel powder metallurgical route, as introduced in our previous study. An isothermal oxidation test was conducted at 1300 °C for up to 10 h. The high-temperature oxidation resistance of Mo-Si-B alloys improved by increasing the volume fraction of intermetallic compound phases; this was a result of the increased amount of protective oxidized layers, which protect the Mo _ss phase from oxidation by covering the surface. In addition, Mo-Si-B alloy with smaller intermetallic compound phases pulverized by high-energy ball milling had better high-temperature oxidation resistance compared to Mo-Si-B alloy with as-synthesized intermetallic compound phases.

Original language	English
Pages (from-to)	94-99
Number of pages	6
Journal	International Journal of Refractory Metals and Hard Materials
Volume	81
DOIs	https://doi.org/10.1016/j.ijrmhm.2019.02.008
State	Published - Jun 2019

Keywords

Core-shell composite powder
High-energy ball milling
High-temperature oxidation
Intermetallic compound
Mo-Si-B alloy

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10.1016/j.ijrmhm.2019.02.008

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title = "Volume and size effects of intermetallic compounds on the high-temperature oxidation behavior of Mo-Si-B alloys",

abstract = " In this study, we investigated the high-temperature oxidation behavior of Mo-Si-B alloys with different volume fractions or sizes of intermetallic compound phases. Mo-Si-B alloys with uniformly dispersed intermetallic compound phases (Mo 5 SIB 2 and Mo 3 Si) in Mo solid solution matrix phase were fabricated using a novel powder metallurgical route, as introduced in our previous study. An isothermal oxidation test was conducted at 1300 °C for up to 10 h. The high-temperature oxidation resistance of Mo-Si-B alloys improved by increasing the volume fraction of intermetallic compound phases; this was a result of the increased amount of protective oxidized layers, which protect the Mo ss phase from oxidation by covering the surface. In addition, Mo-Si-B alloy with smaller intermetallic compound phases pulverized by high-energy ball milling had better high-temperature oxidation resistance compared to Mo-Si-B alloy with as-synthesized intermetallic compound phases.",

keywords = "Core-shell composite powder, High-energy ball milling, High-temperature oxidation, Intermetallic compound, Mo-Si-B alloy",

author = "Choi, \{Won June\} and Park, \{Chun Woong\} and Park, \{Jung Hyo\} and Kim, \{Young Do\} and Byun, \{Jong Min\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jun,

doi = "10.1016/j.ijrmhm.2019.02.008",

language = "English",

volume = "81",

pages = "94--99",

journal = "International Journal of Refractory Metals and Hard Materials",

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T1 - Volume and size effects of intermetallic compounds on the high-temperature oxidation behavior of Mo-Si-B alloys

AU - Choi, Won June

AU - Park, Chun Woong

AU - Park, Jung Hyo

AU - Kim, Young Do

AU - Byun, Jong Min

PY - 2019/6

Y1 - 2019/6

N2 - In this study, we investigated the high-temperature oxidation behavior of Mo-Si-B alloys with different volume fractions or sizes of intermetallic compound phases. Mo-Si-B alloys with uniformly dispersed intermetallic compound phases (Mo 5 SIB 2 and Mo 3 Si) in Mo solid solution matrix phase were fabricated using a novel powder metallurgical route, as introduced in our previous study. An isothermal oxidation test was conducted at 1300 °C for up to 10 h. The high-temperature oxidation resistance of Mo-Si-B alloys improved by increasing the volume fraction of intermetallic compound phases; this was a result of the increased amount of protective oxidized layers, which protect the Mo ss phase from oxidation by covering the surface. In addition, Mo-Si-B alloy with smaller intermetallic compound phases pulverized by high-energy ball milling had better high-temperature oxidation resistance compared to Mo-Si-B alloy with as-synthesized intermetallic compound phases.

AB - In this study, we investigated the high-temperature oxidation behavior of Mo-Si-B alloys with different volume fractions or sizes of intermetallic compound phases. Mo-Si-B alloys with uniformly dispersed intermetallic compound phases (Mo 5 SIB 2 and Mo 3 Si) in Mo solid solution matrix phase were fabricated using a novel powder metallurgical route, as introduced in our previous study. An isothermal oxidation test was conducted at 1300 °C for up to 10 h. The high-temperature oxidation resistance of Mo-Si-B alloys improved by increasing the volume fraction of intermetallic compound phases; this was a result of the increased amount of protective oxidized layers, which protect the Mo ss phase from oxidation by covering the surface. In addition, Mo-Si-B alloy with smaller intermetallic compound phases pulverized by high-energy ball milling had better high-temperature oxidation resistance compared to Mo-Si-B alloy with as-synthesized intermetallic compound phases.

KW - Core-shell composite powder

KW - High-energy ball milling

KW - High-temperature oxidation

KW - Intermetallic compound

KW - Mo-Si-B alloy

UR - http://www.scopus.com/inward/record.url?scp=85062222910&partnerID=8YFLogxK

U2 - 10.1016/j.ijrmhm.2019.02.008

DO - 10.1016/j.ijrmhm.2019.02.008

M3 - Article

AN - SCOPUS:85062222910

SN - 0263-4368

VL - 81

SP - 94

EP - 99

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Volume and size effects of intermetallic compounds on the high-temperature oxidation behavior of Mo-Si-B alloys

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Keywords

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